A chief inspector in the anti-narcotics unit holds true to his beliefs as a police officer. He puts everything on the line to crack down on drugs and to bring drug traffickers to justice. How will our hero resolve this "bursting point" crisis?

Hong Kong Customs and Excise Department officers Chow Ching-lai and Cheung Wan-nam share a close mentor-student relationship. On a case involving seized smuggled arms, Ching-lai is sent to take part in a joint operation with Interpol to capture a reclusive arms dealer. However, Wan-nam makes a drastic decision that further complicates the case.

One of the gang’s most respected elders, Fa Kam is expected to be the gang’s next leader. However, when his three trusted underlings - Wah, Fei and Kwok - are robbed while transporting the gang’s money, his future is put in jeopardy. When Wah discovers the stolen money’s whereabouts, he must choose between his boss and his two best friends.

A renowned charity foundation is holding its annual charity party. It’s a glamourous meeting of the foundation’s friends, associates and the city’s most elite socialites. Just as foundation chairman Ko Shing Man is about to give his annual speech to the attendees, Yeung To – the foundation’s chief financial officer - suddenly hangs to his death on the stage. As suspicions surround Yeung’s death, rumors of a missing $200 million charitable donation begin to run rampant, attracting the attention of the masses. The mystery brings barrister Ma Ying Fung and police officer Or Ting Bong together as they form a temporary partnership to uncover the truth behind the foundation’s dealings. Can they expose all the dark truths behind the foundation’s wrongdoings and restore justice?

Seventeen years ago, an assassin ambushes triad boss Yau. Yau’s wife, Nam, sends Chai, Kam and others to find the assassin. Chai catches the assassin and discovers that he is Meow, Chai and Kam’s childhood best friend. To save his friend, Chai helps Meow flee Hong Kong. Though Yau survives the attack, the injuries leave him crippled for the rest of his life.